Diploma-Diploma Mechanical Engineering 6th Sem Estimating Costing and Contracting(Gujarat Technological University-2013)
Thursday, 29 August 2013 06:27anudouglas
GUJARAT TECHNOLOGICAL UNIVERSITY
Diploma Engineering - SEMESTER–VI • EXAMINATION – SUMMER 2013
Subject Code: 351905 Date: 17-05-2013
Subject Name: Estimating Costing and Contracting
Time: 10:30 am - 01:00 pm Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. English version is considered to be Authentic.
Q.1 (a)Define costing. Explain importance of costing in an industry. (7)
(b) List methods of overhead allocation. Explain man-hour rate method. (7)
Q.2 (a) The market price of a machine is Rs. 80,000 and 15% discount is given to the (7)
distributor. If material cost , labor cost & factory overheads are in the ratio of
2 : 1 : 3 & factory overhead is Rs. 18,000 , office overheads are 5% of prime cost
& selling over heads are 10% of factory cost. Find profit of manufacturer.
(b) Define depreciation. Write different methods of calculating depreciation and (7)
Explain any one in detail.
OR
(b) A machine was purchased at Rs. 3,00,000 , the transportation and installation (7)
Charges were Rs. 4000 & Rs. 6000 respectively & useful life is 20 years. The
scrap Value was estimated Rs. 40000.Find the rate of depreciation/year by
straight line method & sinking fund method. Rate of interest is 18%.
Q.3 (a) List elements of cost in gas welding and also factor affecting gas welding cost. (7)
(b)A square bar of 5 cm side and 40 cm length is to be converted by hand forging (7)
into a bar of hexagonal section having each side equal to 3 cm. calculate the
length of hexagonal bar produced. Consider 5% scale loss of total volume.
OR
Q.3 (a) Explain various types of losses occurs during the forging process. (7)
(b) 100 x 100 x 100 cms open tank is to be gas welded only inner sides from 5 mm (7)
thick M.S. plate. Find the welding time if welding speed is 5cm/min. Take fatigue
allowances 5%, If welder is paid Rs. 160 per day of 8 working hours. Find labor
charges to weld the tank.
Q.4 (a) Define B.E.P. Derive an equation for B.E.P. analytically. Show break even chart (7)
for B.E.P.
(b) M.S. bar having diameter 5 cm and length 10 cm is to be turned down to 4 cm in (7)
one cut. Estimate the machining time if cutting speed is 25 m/min and feed is
0.1 mm/rev.
OR
Q.4 (a) A company has fixed cost Rs. 50,000. Selling price per product is Rs. 20 and (7)
variable Cost is Rs. 10 per product. Find B.E.P of this company. Find new B.E.P
if selling price is increase by 10%.
(b) State and explain different types of sheet metal operation. (5)
(c) List pattern allowances. (2)
Q.5 (a) Define budget and state its objectives. (5)
(b) List modern tools and techniques of cost reduction. (4)
(c) Define: 1. Approach 2. Over travel 3. Feed 4. Depth of cut 5. Cutting Speed (5)
OR
Q.5 (a) Define contract. State the conditions of contract. (7)
(b) Enlist various types of budgets. Explain any one. (7)
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